My neighbour (below) is complaining of water infiltrating his ceiling and state it's from my flat's shower but : The shower is about 3-4 meters away from this leakage ( more like an humidity spot as it's not pouring) The flat wasn't in use since beginning of lockdown (16th of May here, in Paris) The plumber didn't find any reason for this besides the shower curtain being a bit short ... Any idea as to what I should look for ?

Humidity spot in neighbour (below) flat from an empty appartement during confinement?

Home Improvement Asked on November 1, 2021

My neighbour (below) is complaining of water infiltrating his ceiling and state it’s from my flat’s shower but :

The shower is about 3-4 meters away from this leakage ( more like an
humidity spot as it’s not pouring)
The flat wasn’t in use since beginning of lockdown (16th of May here,
in Paris)
The plumber didn’t find any reason for this besides the shower curtain being a bit short …

Any idea as to what I should look for ?

Get help from others!